Sewer check



uly E5, 30. yH. WAGNER 1,770,637

SEWER CHECK Filed May 25, 1928 19': /Zafo'wer o be disposed in a Fatented July 15, 1930 PATENT FFECE.

` HENRY WAGNER, Olli"r CHICAGO, ILLINOIS SEWER Application filed May 23,

This invention relates to a sewer check, and one object of the invention is to provide a check which may be disposed in a stand pipe through which water may pass from an areaway or the like into a sewer and serve to p-revent water from backing up through the stand pipe and causing an areaway or cellar to be iiooded.

Another object of the invention is to pro l@ vide the sewer check with a` valve or closure plate having afloat connected therewith which serves not only to move the valve to a closed position when water rises in a stand pipe but will also constitute a weight to retain the valve in an opened position under normal conditions.

Anotherl object of the invention is to so form the float that it will be disposed beneath the valve and prevented `from projecting beyonda free end of the valve. By this arrangement aclear passage will Vbe provided through which water may 'pass under normal conditions but when water rises in the stand pipethe float which normally constitutes a weight to retain the valve in an opened position may move the valve to a closed position.

Another object of the invention is to permit a head for the upper end of atubular body of the sewer check to be easily removed when necessary and further cause the closure valve and float to be withdrawn when the head is removed.

The invention is illustrated in the accompanying drawing, wherein Figure 1 is a vertical sectional view through the improved sewer check, and

Fig. 2 is aV transvere sectional view taken on the line 2--2 of Fig. 1.

The improved sewer check is intended to stand pipe 1 which extends vertically with its lower end communicating with a sewer pipe. At its upper end the stand p-ipe is formed with an outstanding annular flange or rim 2 over which cement 3 constituting a surface :for an areaway or,

cellar may extend. The pipe 1 could also constitute a vertically extending down pipe for house plumbing.

The sewer check constituting the subjectmatter of this invention includes a tubular` CHECK 1928. Serial No. 279,935.

body 4 which is formed of metal and of such diameter that it will fit loosely in the pipe 1 and thereby permit it to be easily inserted or removed. At its'lower end the body is formed with an outstanding annular flange 5 to bear against the walls of the pipe and the upper end portion of the body `fits into an annulargroove formed in a. collar 6. AThis collar lits snugly within the pipe and carries a flange 7 adapted to be received in an internal seat 8 delined by the collar 2, and from an inspection of Fig. l it will be seen that ythe collar has a lat upper face upon which rests a gasket 9 in order to form a water-tight closure when the head 10 is screwed into the collar with its annular flange 11 bearing against the gasket. By this arrangement a tight closure will be formed between the head 10 and the collar but when it is necessary to make repairs or clean the down pipe the head may be very easilyremoved. An opening is formed centrally in the head and about the opening extends a depending wall 12 which converges downwardly so that water will be directed towards a oonstricted opening 13, and about this opening 13 the lower edge of the depending wall delines a valve seat 14. A recess 15 extends about the upper end of the opening in the head and this recess constitutes a seat for a cover 16 in upwardly into overlapping relation to hinge earsl formed integral with and depending from the'headl() at one side of thewai 12. A pivot pin 22 is passedthrough the arms 2O and Ahinge ears 21 and ,therefore,' the Y valve disk will be pivotallymounted and may heswungirom its openposton Shownin full lines in Fig. 1 to a closed position indicated by dotted lines in this ligure. Against the under face of the valve disk is secured a. bearing bracket 23 having depending hinge ears 24 at its ends and these Years 24 overlap com anion ears 25 of a bearing bracket 26 carrled by the upper wall 27 of a hollow metal floatQB. A pin 29 is passed through the ears 24 and 25 and, therefore, the fioat will be pivotally connected with the valve and normall suspended therefrom, as shown in Fig. 1. 'lille float is formed of metal and will have suieient weight to normally swing the valve downwardly to an open position but when water moves upwardly in the stand pipe and enters the tubular body of the cheek air which is trapped in the float will cause the float to move upwardly as the water rises and the valvewill be swung upwardly to a closed position and retained tightly closed until the level of the water in the stand pipe is lowered awsuilicient distance to permit the lioat to again function as a weight and draw the valve downwardly. By this arrangement there Will be no danger of the valve becoming stuck when in a raised position and failing to move downwardl to an open position. Freni aninspection of 2, it will be seen that the float is -of materially less diameter than the interior of the tubular body and instead of being circular in top plan is formed with a flattened side wall 30 which is bowed inwardly. Therefore, a clear passage will be provided between the float and tlie side portion of the tubular body toward which the free end of `the valve extends and water passing through the opening 14 and directed towards the last-mentioned portion of the walls of the body by striking the downwardly inclined valve may pass freely through the tubular body along the flattened wall 30 of the float and downwardly into the stand pipe.

Having thus described the invention, I claim:

1. In a sewer check, a tubular body adapted to itwithin a sewer pipe, a head for the upper end of said body formed with an opening, a depending wall surrounding the opening and constituting a valve seat, a valve in said body pivotally connected with said head at one side of the opening and adapted to be swung upwardly' into contact with the valve seat to c ose the opening, and a hollow float in said body closed at its upper end and having its u per end pivotally connected with the valve, t e float being disposed beneath the valve and having aside portion beneath the free end of the valve terminating well away from the o posed portion of the wall of the tubular bo y to provide a passage through the body, the float serving to move the valve to a closed position when moved upwardly by water rising in the sewer pipe and body. 2. In a sewer check, a tubular body adapted to tit within a sewer pipe, a collar about the upper end of the body to engage the sewer pipe and suspend the body therein, a head for said body removably engaged with said collar and having an opening and a depending wall surrounding the opening and constituting a valve seat, a hinge ear at one side of the depending wall, a valve disk to sea against the valve seat disposed within the body and hinged to said hinge ear, a hollow float in said body closed at its top, and companion hinge eals extending from the valve and upper end of the float and pivotally connected to suspend the float from the valve, said float being disposed beneath the valve and terminating in spaced relation to the portion of the walls of the body opposite the free end of the valve to provide a clear passage through the body.

3. In a sewer check, a tubular body adapted to lit within a sewer ipe, a collar about the upper end of the bot yto engage the sewer pipe and suspend the body therein, a head for said body removably engaged with said collar and having an opening and a depending wall surrounding the opening and constituting a valve seat, a hinge ear at one side of the depending wall, a valve disk to seat against the valve seat disposed within the body and hinged to said hinge ear, a hollow float in said body closed at its top, and companion hinge ears extending from the valve and upper end of the float and pivotally conneeted to suspend the float from the valve, said float being disposed beneath the valve and having a fiat side face extending in approximately the plane of the free end of the valve and spaced well away from the passage through the body.

In testimony whereof I aflix my signature.

HENRY WAGNER. [1.. s]

llO 

